CVE-2026-16707
IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the FSP can send a specially crafted mailbox message to read or modify arbitrary regions of Hostboot memory, compromising the host firmware boot stack and the hypervisor subsequently loaded by it. Successful exploitation results in a confidentiality, integrity, and availability impact to the managed system.
Weakness
IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the FSP can send a specially crafted mailbox message to read or modify arbitrary regions of Hostboot memory, compromising the host firmware boot stack and the hypervisor subsequently loaded by it. Successful exploitation results in a confidentiality, integrity, and availability impact to the managed system.
Affected products
- ibm power_system_s1122_\(9824-22a\)_firmware
- ibm power_system_s1122_\(9824-22a\)
- ibm power_system_s1124_\(9824-42a\)_firmware
- ibm power_system_s1124_\(9824-42a\)
- ibm power_system_s1122s_\(9824-22b\)_firmware
- ibm power_system_s1122s_\(9824-22b\)
- ibm power_system_s1114_\(9824-41b\)_firmware
- ibm power_system_s1114_\(9824-41b\)
References
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